CN111196103A

CN111196103A - Folding multifunctional ruler

Info

Publication number: CN111196103A
Application number: CN201911262678.6A
Authority: CN
Inventors: 李永超; 贾慧慧; 高雪芹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-05-26

Abstract

The invention relates to a folding multifunctional ruler for students, which comprises a main ruler, a rotary auxiliary ruler, a vernier auxiliary ruler and a compass handle, wherein the rotary auxiliary ruler is of a stepped cylindrical structure, the uppermost end of the rotary auxiliary ruler is provided with an external thread, a base is inclined, a convex buckle is arranged on the rotary auxiliary ruler, an angle scale mark is arranged on the lower surface of the rotary auxiliary ruler, the main ruler body is provided with a length scale mark, one end of the main ruler body is circular, the center of the main ruler body is provided with a conical hole, the lower surface of the main ruler body is provided with an angle scale mark, the other end of the main ruler body is provided with a steel needle accommodating hole, the rotary auxiliary ruler body is provided with a length scale mark, one end of the rotary auxiliary ruler body is circular with a hole in the center, the inner side of the rotary auxiliary ruler body is provided with a concave buckle, the other end of the rotary auxiliary ruler body is provided with a pencil lead accommodating hole, one end, the functions of the ruler, the protractor, the set square and the compasses can be realized, the carrying is convenient, and the drawing efficiency can be greatly improved.

Description

Folding multifunctional ruler

Technical Field

The invention belongs to the technical field of stationery, and relates to a folding multifunctional ruler.

Background

The multifunctional ruler is characterized in that a ruler, a set square, a protractor, compasses and the like are generally required to be equipped for students at present, the type and the specification are more, the size is larger, the carrying is more inconvenient, the student stationery related to the vernier caliper measuring principle is not provided, the students can not effectively understand the vernier caliper when studying the vernier caliper, two to three functions of the multifunctional ruler in the existing market are simply integrated on one ruler, the measuring method related to the vernier caliper principle is not provided, the size is larger, the carrying is inconvenient, the student recognition degree is lower, and various tools are required to be carried in general drawings.

Disclosure of Invention

The invention aims to provide a portable foldable multifunctional ruler with small size, which can realize the functions of a ruler, a protractor, a set square and compasses. The drawing efficiency is improved, and students can contact the structural principle of the vernier caliper as early as possible, so that the students can master the using method and the principle of the vernier caliper of the precision instrument in the long-term use process.

The folding multifunctional ruler comprises a main ruler, a rotary auxiliary ruler, a vernier auxiliary ruler, a compasses handle, a steel needle, a pencil lead, a manual screw and a rubber gasket, wherein the rotary auxiliary ruler is of a stepped cylindrical structure, the lower end of the rotary auxiliary ruler is a circular base with inclination, vernier angle scale marks and angle measuring auxiliary mark lines are arranged on the lower surface of the base, a convex buckle is arranged on the outer side of the cylinder on the base, an external thread structure is arranged at the upper end of the cylinder, the lower surface of the main ruler body is provided with metric length scale marks, one end of the main ruler is circular, a conical hole matched with the vernier auxiliary ruler base is formed in the center of the main ruler, the lower surface of the position is provided with the angle scale marks, the other end of the main ruler body is provided with a containing hole, a slit is formed in the containing hole, the lower end of the main ruler body is provided with a thread structure matched with the manual screw, the compasses steel needle is fixed to the tail end, one end has the circular structure of round hole for the center, and the lower surface has the angle scale mark, the circular bore internal diameter is the same with vernier auxiliary ruler base upper end cylinder external diameter, and the inboard in hole has to detain seamless complex concave knot with vernier auxiliary ruler base epirelief, and the other end has the hole of accomodating, and the accommodation hole department has a slit, and the lower extreme has and is used for with hand screw complex helicitic texture, the pencil lead is fixed to rotatory auxiliary ruler body end by hand screw through the slit of accommodation hole department, the compasses handle end is for having the internal screw thread circular structure with vernier auxiliary ruler small circle post upper end screw-thread fit, steel needle, pencil lead, hand screw, rubber gasket are the standard component on the existing market. The main ruler is assembled together with the vernier auxiliary ruler through the conical hole in a matching mode, the rotary auxiliary ruler is assembled together with the convex buckle on the rotary auxiliary ruler through the concave buckle, then the rubber gasket is placed, and finally the main ruler is fixed together through the threaded structures on the vernier auxiliary ruler and the compass handle.

Preferably, angle scale marks are arranged on the main scale and the rotary auxiliary scale, the main scale and the rotary auxiliary scale are combined to achieve high measurement accuracy, the protractor for students can only read single digits at present and can only obtain 0.1 degree by means of estimation, the protractor can achieve the aim without depending on estimation, and angles of any angles can be drawn at the same time.

Preferably, the invention innovatively converts the main ruler and the auxiliary ruler into the compass support leg. And simultaneously, circles with continuous size and radius can be drawn.

Preferably, the main ruler is provided with a hole for accommodating and fixing the steel needle for the compasses, the diameter of the hole is slightly larger than that of the steel needle, the steel needle can be taken out and fixed through screwing a screw by hand when drawing a circle, and the steel needle can be stored in the hole when not in use.

Preferably, a hole for containing and fixing the pencil core is designed, the diameter of the hole is slightly larger than that of the pencil core, the pencil core can be taken out through a hand screw and can be fixed when a circle is drawn, and the pencil core can be stored in the hole when the pencil core is not used.

Preferably, the main ruler, the rotary auxiliary ruler and the vernier auxiliary ruler are fixed through the thread structures of the vernier auxiliary ruler and the compass handle instead of being fixed through screws in the center of the hole, so that the central position can be reserved, and the position of an angular vertex can be conveniently determined during angle measurement.

Preferably, a transparent rubber gasket is arranged below the compass handle, so that the compass handle has a certain rotating space while the main ruler, the auxiliary rotating ruler and the auxiliary vernier ruler are fixed, and the compass handle can rotate to a proper position when drawing a circle, so that the circle with continuous size and radius can be drawn.

Drawings

Fig. 1 is a schematic structural view of a foldable multifunctional ruler according to the present invention.

Fig. 2 is a view showing the construction of the vernier caliper.

FIG. 3 is a schematic diagram of the vernier caliper, the main caliper, the rotary caliper, the rubber gasket and the compass handle in a schematic approximate sequence during assembly.

Figure 4 is an example of the use of the ruler.

Fig. 5 is a view showing an example of the case of using the angle measuring device as a protractor to measure an angle and a triangular plate to draw an angle.

FIG. 6 is a view showing an example of the use of the compasses.

In the figure, 1, a main scale; 2. rotating the auxiliary ruler; 3. a vernier auxiliary ruler; 4. a compasses handle; 5. a steel needle; 6. a pencil lead; 7. screwing the screw by hand; 8. a rubber gasket.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be derived by a person skilled in the art from the invention without making any creative effort, shall fall within the protection scope of the present invention.

The invention adopts a folding scheme, the size is smaller after being folded, the size is only half of that of a common ruler in the market at present, the ruler is convenient to place in a writing case, and figure 1 is a schematic diagram after a steel needle and a pencil lead for compasses are taken out.

In the invention, the main ruler, the rotary auxiliary ruler, the vernier auxiliary ruler, the compass handle and the rubber gasket are all made of transparent materials, so that scales can be observed conveniently, and other accessories are all the existing standard parts.

The vernier auxiliary ruler structure is shown in figures 2 and 3, the lower end of the vernier auxiliary ruler structure is a circular base with a conical surface, the edge of the lower surface of the base is provided with vernier angle scale marks, the center of the vernier angle scale marks is provided with an auxiliary marking line for measuring an angle, the intersection point is the circle center, a cylinder coaxial with the base is arranged on the base, the upper end of the base is provided with an external thread structure, and four square convex buckles which are uniformly distributed are arranged on the outer side of the cylinder on the.

The main scale structure is as shown in part 1 in fig. 1 and fig. 3, the blade lower surface has metric length scale mark, terminal swing joint department is circular, thickness is half of blade thickness, there is angle scale mark at the lower surface edge, there is the bell mouth at the center, the bell mouth just is the clearance fit that the clearance is less with the sub-chi base lower extreme conical surface of vernier during the assembly, guarantee that the angle of the sub-chi of vernier is carved on the coplanar with the scale mark of main scale, utilize the bell mouth can also guarantee that the sub-chi of vernier and the swing joint department of main scale have fine concentricity. The other end has the hole of accomodating, diameter (1.2 mm) and degree of depth (28 mm) slightly are greater than diameter (1 mm) and length (20 mm) of compasses steel needle, and accommodation hole department has the slit, and the lower extreme has and is used for adjusting the size of slit with hand screw complex, can adjust the size of slit through rotatory hand screw when drawing the circle, is convenient for take out steel needle to suitable position and make it fixed, can hide the steel needle in the hole when not using, avoids stretching out and stabbing the student.

The structure of the rotary auxiliary ruler is shown as a part 2 in figures 1 and 3, metric length scale marks are arranged on the lower surface of the ruler body, a circular structure with a circular hole is arranged at the movable connection part of the tail end, the thickness of the circular structure is half of the thickness of the ruler body, the inner diameter of the circular structure is the same as the outer diameter of a small cylinder at the upper end of the vernier auxiliary ruler, and a square concave buckle in seamless fit with a convex structure on the base of the vernier auxiliary ruler is arranged on the inner side of the hole. The pencil lead is convenient to take out to a proper position and fix, the pencil lead can be stored in the hole when not used, and the pencil lead is prevented from being broken accidentally when extending outside.

As shown in fig. 3, during the equipment, place the main scale on the vice chi of vernier earlier, the bell mouth that has the base of inclination through the vice chi of vernier and on the main scale guarantees its relative position, then install rotatory vice chi again, guarantee position between them through unsmooth knot, it can drive the vice chi of vernier and rotate together to rotate rotatory vice chi when measuring the angle simultaneously, secondly install the transparent rubber gasket again, install the compasses handle at last again, the rubber gasket piece is elastic, make the compasses handle also have certain rotation space when playing the fixed action, can rotate the compasses handle to the suitable position when drawing the circle again.

As shown in figure 3, the main ruler and the rotary auxiliary ruler have steps at the ruler body and the circular movable connection part, so that all the scale marks are on the same plane after the folding multifunctional ruler is assembled, the scale marks and the graph to be detected are attached to the paper surface, and the scale marks and the paper surface are prevented from having certain height dislocation to cause visual errors in use.

Metric length scale marks are arranged on the main scale and the rotary auxiliary scale, and the main scale and the rotary auxiliary scale can be used in a matching way to achieve a larger measuring range, as shown in figure 4, the scale is an example graph when used as a straight scale.

The main scale and the auxiliary vernier scale are provided with angle scale lines which can achieve higher angle measurement accuracy when being used in a matched mode, fig. 5 is an example graph used as a protractor function, the angle measurement accuracy in the example graph reaches 0.1 degrees, a mark is arranged at the circle center of the auxiliary vernier scale, when the angle is measured, the point is aligned with the vertex of an angle, the diameter is aligned with one side firstly, then the main scale is pressed, the auxiliary vernier scale is rotated to drive the auxiliary vernier scale to rotate together, when the diameter is aligned with the other side, the readings on the main scale and the auxiliary scale are read according to the vernier caliper principle, and the degree of the angle can be measured.

FIG. 6 is a schematic view of an example of the use of the compasses.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a folding multi-functional ruler which characterized in that: the multifunctional folding ruler comprises a main ruler (1), a rotary auxiliary ruler (2), a vernier auxiliary ruler (3), a compass handle (4), a steel needle (5), a pencil core (6), a hand screw (7) and a rubber gasket (8), wherein the vernier auxiliary ruler (3) is of a stepped cylindrical structure, the lower end of the vernier auxiliary ruler is a circular base with inclination, vernier angle scale marks and angle measuring auxiliary mark lines are arranged on the lower surface of the base, a convex buckle is arranged on the outer side of the cylinder on the base, an external thread structure is arranged at the upper end of the cylinder, metric length scale marks are arranged on the lower surface of the ruler body of the main ruler (1), one end of the vernier auxiliary ruler is circular, a conical hole matched with the base of the vernier auxiliary ruler (3) is formed in the center of the vernier auxiliary ruler, the angle scale marks are arranged on the lower surface of the part, a containing hole is formed in the other end of the main ruler, a slit is formed in the containing hole, a, the compasses steel needle (5) is fixed to the tail end of the main ruler body (1) through a slit at a containing hole by a hand screw (7), the lower surface of the rotating auxiliary ruler body (2) is provided with metric length scale marks, one end of the rotating auxiliary ruler body is of a circular structure with a circular hole at the center, the lower surface of the rotating auxiliary ruler body is provided with angle scale marks, the inner diameter of the circular hole is the same as the outer diameter of a cylinder at the upper end of a base of the vernier auxiliary ruler (3), the inner side of the hole is provided with a concave buckle which is in clearance fit with the convex buckle on the base of the vernier auxiliary ruler (3) in a smaller clearance manner, the other end of the rotating auxiliary ruler body (2) is provided with a containing hole, the lower end near the slit at the containing hole is provided with a thread structure which is matched with the hand screw (7), a pencil core (6) is fixed to the tail end of the main ruler body of the rotating auxiliary ruler (2) through the slit at the containing hole by the hand screw (7), the tail end of the, the steel needle (5), the pencil core (6), the hand screw (7) and the rubber gasket (8) are standard parts in the existing market.

2. A foldable multifunctional ruler according to claim 1, characterized in that: the angle scale marks on the vernier auxiliary scale (3) are combined with the angle scale marks on the main scale (1) to achieve higher angle measurement precision.

3. A foldable multifunctional ruler according to claim 1, characterized in that: metric length scale marks on the body of the main ruler (1) are combined with metric length scale marks on the body of the rotary auxiliary ruler (2), so that a large length measurement range is achieved.

4. A foldable multifunctional ruler according to claim 1, characterized in that: the main ruler (1) and the rotary auxiliary ruler (2) for measuring the length are designed as the support legs of the compasses.

5. A foldable multifunctional ruler according to claim 1, characterized in that: the main ruler (1), the rotary auxiliary ruler (2) and the vernier auxiliary ruler (3) are fixed through the thread structures of the vernier auxiliary ruler (3) and the compass handle (4), and are not fixed through screws at the center, so that the center position can be reserved.

6. A main scale (3) and a rotary auxiliary scale (4) according to claim 4, wherein: when the compasses support leg is used, holes for containing and fixing a compasses steel needle and a pencil core are designed on the main ruler (1) and the rotary auxiliary ruler (2), the steel needle and the pencil core can be taken out and fixed by screwing screws by hands when drawing circles, and the steel needle and the pencil core can be stored in the holes when not used.

7. The fastening system of claim 5, wherein: the lower part of the compass handle (4) is provided with a transparent rubber gasket, so that the compass handle can have a certain rotating space while the main ruler (1), the auxiliary rotating ruler (2) and the auxiliary vernier ruler (3) are ensured to be fixed, and can rotate to a proper position when drawing a circle to draw a circle with continuous radius.