CN218929052U

CN218929052U - Deduction ruler

Info

Publication number: CN218929052U
Application number: CN202222156169.9U
Authority: CN
Inventors: 周逊红
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-04-28
Anticipated expiration: 2032-08-16

Abstract

The utility model discloses a deduction ruler, which comprises a first deduction plate, a second deduction plate and a third deduction plate, wherein a triangular hole for drawing a right triangle is formed in the first deduction plate, and right-angle scale marks are arranged on the first deduction plate along right-angle lines of the triangular hole; the first deduction board is provided with a sine line for drawing sine or cosine, and the first deduction board is provided with a coordinate line; two U-shaped holes for drawing parabolas are formed in the second deduction plate; the third deduction plate is provided with a coordinate axis and grid lines with the center of the coordinate axis as the center. According to the technical scheme, the sine line or the cosine line is designed on the first deduction ruler, so that a user can directly draw the sine line or the cosine line on the first deduction ruler, and the coordinate axis of the third deduction ruler can be attached to the coordinate line of the first deduction ruler, so that a clearer sine or cosine coordinate system is formed, and the problem solving use of the user is facilitated.

Description

Deduction ruler

Technical Field

The utility model relates to the technical field of rules, in particular to a deduction rule.

Background

The traditional ruler is only provided with a straight line scale mark and an angle measuring scale mark, is used for measuring and calculating the length and the angle, or is used for drawing a straight line, and a certain ruler is provided with a hole with a special shape such as letters or a round shape in the middle, so that a user can conveniently draw a picture, and is usually used for measuring and calculating the length;

when the students solve the problem, various types of graphs need to be analyzed, the traditional ruler is single in function, the operability of the students is low, the traditional ruler is inconvenient for users to draw sine strings and residual strings in the problem solving process, and the problem solving process cannot be intuitively performed according to the sine strings and the residual strings.

In summary, how to design a ruler capable of directly drawing the positive string and the residual string is a problem to be solved by the people skilled in the art

Disclosure of Invention

The embodiment of the utility model mainly aims at providing a deduction ruler and aims at providing a ruler capable of directly drawing a positive string and a residual string.

The technical scheme of the utility model for solving the technical problems is that the deduction ruler comprises a first deduction plate, a second deduction plate and a third deduction plate, wherein a triangular hole for drawing a right triangle is formed in the first deduction plate, and right-angle scale marks are arranged on the first deduction plate along right-angle lines of the triangular hole; the first deduction board is provided with a sine line or a cosine line for drawing the sine or the cosine, and the first deduction board is provided with a coordinate line; two U-shaped holes for drawing parabolas are formed in the second deduction plate; and the third deduction plate is provided with a coordinate axis, and grid lines are arranged by taking the center of the coordinate axis as the center.

In an embodiment of the present utility model, the deduction ruler further includes a housing, a cavity is formed in the housing, the first deduction plate is detachably disposed in the cavity, and the second deduction plate is detachably disposed in the cavity and is overlapped with the first deduction plate; the third deduction plate is detachably arranged in the cavity and overlapped with the second deduction plate.

In an embodiment of the present utility model, the first deduction board is provided with first linear scale marks along four peripheries of the first deduction board, and the second deduction board is provided with second linear scale marks along four peripheries of the second deduction board; the third deduction plate is provided with third linear scale marks along the four peripheries of the third deduction plate.

In an embodiment of the present utility model, the deduction ruler further includes a fourth deduction plate, the fourth deduction plate is detachably disposed in the cavity and is overlapped with the third deduction plate, the fourth deduction plate is provided with fourth linear scale marks along four peripheries of the fourth deduction plate, and two indexing holes are disposed on the fourth deduction plate at intervals along a direction of a diagonal line of the fourth deduction plate.

In an embodiment of the present utility model, the deduction ruler further includes a fifth deduction plate, wherein the fifth deduction plate is detachably disposed in the cavity and is overlapped with the fourth deduction plate, and fifth linear scale lines are disposed on the fifth deduction plate along the peripheral edges of the fifth deduction plate; and the fifth deduction board is provided with right-angle grid lines.

In an embodiment of the present utility model, the deduction ruler further includes a sixth deduction plate, and the sixth deduction plate is detachably disposed in the cavity and is disposed in an overlapping manner with the fifth deduction plate; a plurality of coordinate holes are formed in the middle of the sixth deduction plate, and the coordinate holes are arranged at intervals; a semicircular hole is formed in one side of the coordinate hole of the sixth deduction plate, and an angle line is arranged on the sixth deduction plate along the radian direction of the semicircular hole; the sixth deduction plate is provided with a grid line at the other side of the coordinate hole.

In an embodiment of the present utility model, sixth linear graduation marks are disposed on both sides of the sixth deduction plate along a direction perpendicular to the coordinate hole.

In an embodiment of the utility model, the deduction ruler further includes a seventh deduction plate, the seventh deduction plate is detachably disposed in the cavity and is overlapped with the sixth deduction plate, and the first deduction plate is provided with seventh scale marks on two sides of the seventh deduction plate.

According to the technical scheme, the sine line or the cosine line is designed on the first deduction ruler, so that a user can directly draw the sine line or the cosine line on the first deduction ruler, and the coordinate axis of the third deduction ruler can be attached to the coordinate line of the first deduction ruler, so that a clearer sine or cosine coordinate system is formed, and the problem solving use of the user is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a first deduction board according to the present utility model;

fig. 2 is a schematic structural diagram of a second deduction board according to the present utility model;

FIG. 3 is a schematic structural diagram of a third deduction board according to the present utility model;

FIG. 4 is a schematic structural diagram of a fourth deduction board according to the present utility model;

FIG. 5 is a schematic structural diagram of a fifth deduction board according to the present utility model;

FIG. 6 is a schematic structural diagram of a sixth deduction board according to the present utility model;

fig. 7 is a schematic structural diagram of a seventh deduction board according to the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	First deduction board	40	Fourth deduction board
11	Triangular hole	41	Fourth straight line scale mark
				12	Right-angle scale mark	42	Marking hole
13	Positive string	50	Fifth deduction board
				14	Coordinate line	51	Fifth straight line scale mark
15	First straight line scale mark	52	Right-angle grid line
				20	Second deduction board	60	Sixth deduction board
21	U-shapeHoles and holes	61	Semicircle orifice
				22	Second straight line scale mark	62	Angular line
30	Third deduction board	63	Grid line
				31	Axis of coordinates	64	Sixth straight line scale mark
32	Grid line	65	Coordinate hole
				33	Third straight line scale mark	70	Seventh deduction board
		71	Seventh graduation mark

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "several", "a plurality" or "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

The utility model provides a deduction ruler, and aims to provide a ruler capable of directly drawing a positive string 13 and a residual string.

The following describes a specific structure of the deduction ruler according to the present utility model in a specific embodiment:

in the technical solution of the present embodiment, as shown in fig. 1, 2, and 3, a deduction ruler includes a first deduction board 10, a second deduction board 20, and a third deduction board 30, where a triangle hole 11 for drawing a right triangle is formed on the first deduction board 10, and right-angle scale marks are provided on the first deduction board 10 along a right-angle line of the triangle hole 11; a sine line 13 for drawing sine or cosine is arranged on the first deduction board 10, and a coordinate line 14 is arranged on the first deduction board 10; the second deduction plate 20 is provided with two U-shaped holes 21 for drawing parabolas; the third deduction plate 30 is provided with a coordinate axis 31 and grid lines 32 centering on the center of the coordinate axis 31.

It can be appreciated that by designing the sine line 13 for drawing the sine or cosine on the first deduction rule, the user can directly draw the sine line 13 or the cosine line on the first deduction rule, and can attach the coordinate axis 31 of the third deduction rule to the coordinate line 14 of the first deduction rule, so as to form a clearer coordinate system of the sine or the cosine, so that the user can solve the problem.

Specifically, a sine line 13 of sine or cosine may be drawn by the first deduction board 10, and a right triangle may be drawn; a parabola may be drawn by the second deduction plate 20; a coordinate system can be established through the third deduction ruler so as to be matched with the sine line 13 on the first deduction plate 10 to form a sine or cosine coordinate system, so that a user can solve the problem conveniently; and drawing a parabolic coordinate system in cooperation with the parabola of the second deduction plate 20.

In one possible embodiment, the materials of the first deduction board 10, the second deduction board 20 and the third deduction board 30 are transparent materials, and when in use, lines such as straight lines, curves and the like can be directly drawn on the first deduction board 10, the second deduction board 20 and the third deduction board 30.

In a possible embodiment, the second deduction board 20 is used to draw a parabola with a specified opening, and a=1, a=2 parabolas are drawn under a rectangular plane coordinate system with a unit length of 0.5 cm, and in cooperation with the third deduction board 30, the parabolas can be drawn on the third deduction board 30, and the parabola problems, such as a movable parabola problem, a symmetrical parabola problem, a section maximum problem, etc., can be solved by moving the third deduction board 30.

In an embodiment of the present utility model, the deduction ruler further includes a housing, a cavity is formed in the housing, the first deduction plate 10 is detachably disposed in the cavity, and the second deduction plate 20 is detachably disposed in the cavity and is overlapped with the first deduction plate 10; the third deduction plate 30 is detachably disposed in the cavity and is overlapped with the second deduction plate 20.

It will be appreciated that, for convenience of use, the deduction ruler further comprises a housing, and the first deduction plate 10, the second deduction plate 20 and the third deduction plate 30 can be stacked together and placed in the housing, so that the deduction ruler is convenient to store and use.

In an embodiment of the present utility model, as shown in fig. 1, the first deduction board 10 is provided with first linear graduation marks 15 along the four circumferences of the first deduction board 10, and the second deduction board 20 is provided with second linear graduation marks 22 along the four circumferences of the second deduction board 20; the third deduction board 30 is provided with third linear scale lines 33 along the peripheral edge of the third deduction board 30.

In an embodiment of the present utility model, as shown in fig. 4, the deduction ruler further includes a fourth deduction plate 40, the fourth deduction plate 40 is detachably disposed in the cavity and is overlapped with the third deduction plate 30, the fourth deduction plate 40 is provided with fourth linear scale marks 41 along the peripheral edge of the fourth deduction plate 40, and two indexing holes 42 are disposed on the fourth deduction plate 40 at intervals along a diagonal direction of the fourth deduction plate 40.

It can be appreciated that by providing two indexing holes 42 on the fourth deduction plate 40 at intervals, wherein one of the indexing holes 42 is used as a rotation center, a geometric figure or a functional image is drawn on the fourth deduction plate 40 to study the rotation and central symmetry of the figure. In the aspect of solving the problems, the problems about rotation, such as grid drawing, geometric exploration, hidden circles and the like, are solved, and in the aspect of knowledge learning, such as rotation of graphs, congruent triangles, the nature and judgment of parallelograms and the like, the timely use is helpful for understanding, deepening and summarizing knowledge.

In an embodiment of the present utility model, as shown in fig. 5, the deduction ruler further includes a fifth deduction plate 50, the fifth deduction plate 50 is detachably disposed in the cavity and is overlapped with the fourth deduction plate 40, and the fifth deduction plate 50 is provided with fifth linear graduation lines 51 along four circumferences of the fifth deduction plate 50; the fifth deduction plate 50 is provided with right-angle grid lines 52.

It will be appreciated that in primary and middle schools, there are a number of grid problems that occur, including many problems such as area solution, translational rotation of the graph, grid mapping, congruence of the graph, and the like, by providing a fifth deduction board 50 with right angle grid lines 52 for solving the mathematical problem of grid mapping.

In an embodiment of the present utility model, as shown in fig. 6, the deduction ruler further includes a sixth deduction plate 60, where the sixth deduction plate 60 is detachably disposed in the cavity and is disposed to overlap with the fifth deduction plate 50; a plurality of coordinate holes 65 are formed in the middle of the sixth deduction plate, and the plurality of coordinate holes 65 are arranged at intervals; a semicircular hole 61 is formed in one side of the coordinate hole 65 of the sixth deduction plate 60, and an angle line 62 is formed in the sixth deduction plate 60 along the radian direction of the semicircular hole 61; the sixth deduction plate is provided with a grid line 63 at the other side of the coordinate hole 65.

It can be appreciated that by providing the semicircular hole 61 on the sixth deduction plate 60, the sixth deduction plate 60 is provided with the angle line 62 along the radian direction of the semicircular hole 61, so as to replace the conventional compass, protractor, triangle, ruler, and all ruler drawing can be completed.

In an embodiment of the present utility model, as shown in fig. 6, sixth linear graduations 64 are provided on both sides of the sixth deduction plate 60 in a direction perpendicular to the coordinate hole 65.

In an embodiment of the present utility model, as shown in fig. 7, the deduction ruler further includes a seventh deduction plate 70, the seventh deduction plate 70 is detachably disposed in the cavity and is disposed to overlap with the sixth deduction plate 60, and the first deduction plate 10 is provided with seventh graduation marks 71 on two sides of the seventh deduction plate 70.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A deduction ruler, comprising:

the first deduction board is provided with a triangular hole for drawing a right triangle, and right-angle scale marks are arranged on the first deduction board along right-angle lines of the triangular hole; the first deduction board is provided with a sine line or a cosine line for drawing the sine or the cosine, and the first deduction board is provided with a coordinate line;

the second deduction plate is provided with two U-shaped holes for drawing parabolas; a kind of electronic device with high-pressure air-conditioning system

And the third deduction plate is provided with a coordinate axis and grid lines taking the center of the coordinate axis as the center.

2. The deduction ruler according to claim 1, further comprising a housing, wherein a cavity is formed in the housing, the first deduction plate is detachably arranged in the cavity, and the second deduction plate is detachably arranged in the cavity and is overlapped with the first deduction plate; the third deduction plate is detachably arranged in the cavity and overlapped with the second deduction plate.

3. The deduction ruler according to claim 2, wherein the first deduction plate is provided with first linear scale marks along the four periphery of the first deduction plate, and the second deduction plate is provided with second linear scale marks along the four periphery of the second deduction plate; the third deduction plate is provided with third linear scale marks along the four peripheries of the third deduction plate.

4. The deduction ruler according to claim 2, further comprising a fourth deduction plate detachably arranged in the cavity and overlapped with the third deduction plate, wherein the fourth deduction plate is provided with fourth linear scale marks along four peripheries of the fourth deduction plate, and two indexing holes are formed in the fourth deduction plate at intervals along a diagonal direction of the fourth deduction plate.

5. The deduction ruler according to claim 4, further comprising a fifth deduction plate detachably arranged in the cavity and overlapped with the fourth deduction plate, wherein the fifth deduction plate is provided with fifth linear scale marks along the periphery of the fifth deduction plate; and the fifth deduction board is provided with right-angle grid lines.

6. The deduction ruler according to claim 5, further comprising a sixth deduction plate detachably disposed in the cavity and overlapped with the fifth deduction plate; a plurality of coordinate holes are formed in the middle of the sixth deduction plate, and the coordinate holes are arranged at intervals; a semicircular hole is formed in one side of the coordinate hole of the sixth deduction plate, and an angle line is arranged on the sixth deduction plate along the radian direction of the semicircular hole; the sixth deduction plate is provided with a grid line at the other side of the coordinate hole.

7. The deduction ruler according to claim 6, wherein sixth straight line graduation marks are provided on both sides of the sixth deduction plate in a direction perpendicular to the coordinate hole.

8. The deduction ruler according to claim 6, further comprising a seventh deduction plate detachably disposed in the cavity and overlapped with the sixth deduction plate, wherein the first deduction plate is provided with seventh graduation marks at both sides of the seventh deduction plate.