WO2020098733A1

WO2020098733A1 - Curve tracing flexible ruler and curve drawing device

Info

Publication number: WO2020098733A1
Application number: PCT/CN2019/118350
Authority: WO
Inventors: 满洪流; 满小溪; 万华; 曹东坡
Original assignee: 武汉满洪流科技有限公司
Priority date: 2018-11-18
Filing date: 2019-11-14
Publication date: 2020-05-22
Also published as: CN109515040A

Abstract

A curve tracing flexible ruler (100) and a curve tracing device. The curve tracing flexible ruler (100) comprises a flexible ruler body (10) which is set into a structure with the strength gradually weakened from two ends to the middle, so that the strength of the curve tracing flexible ruler (100) is gradually weakened from two ends to the middle; the strength of the curve tracing flexible ruler (100) is gradually weakened from two ends to the middle, thus, positioning is performed at the middle position to form a vertex of a curve; when the positions on the two sides of the middle position are correspondingly positioned, the strength of the position closer to the middle position becomes small, design finalizing by a positioning point is easier, the arrangement that the curvature becomes large due to bending is achieved, and then the problem that when a flexible ruler is used for making a curve by means of a specific point, precision is low is solved.

Description

Curve drawing soft ruler and curve drawing device The

Priority information: This application requires the priority of the Chinese patent application filed on November 18, 2018, with the application number 201811441183.5 and the name "a curve drawing soft ruler and curve drawing device", the entire contents of which are incorporated by reference In this application.

Technical field

The application relates to a teaching drawing tool, in particular to a curve drawing soft ruler and a curve drawing device.

Background technique

In the process of drawing the curve, the user will determine a few specific points, and then position the soft ruler side bending at these specific points to bend to form the required curve. Taking the Chinese patent CN106739686A as an example, the The patent discloses a teaching drawing tool, and specifically discloses a method of using five fixed points to make a curve including a parabola. However, it is not difficult to find that most of the parabola has a large curvature around the vertex during use. None can be bent into a curve around the vertex of the parabola, and it is difficult to make it even with external force, so the accuracy is not high when drawing the curve around the vertex of the parabola.

technical problem

The inventors analyzed the soft ruler in the related art by using a fixed specific point to make a curve and found that the problem that affects the accuracy of the curve is mainly that the closer the curve (parabola) to the vertex, the greater the curvature. However, in the related art Because the strength of the soft ruler in the length direction is the same, it is difficult to achieve a greater curvature near the vertex of the curve when bending. It is often closer to the vertex of the curve and the curvature is smaller. In view of this, this application provides a Curve drawing soft ruler and curve drawing device to improve the problem that the accuracy of the soft ruler in the related art when the curve is made through a specific point is not high.

Technical solution

The present application provides a curve drawing soft ruler, which includes a soft ruler body, and the soft ruler body is provided with a structure in which the strength is gradually weakened from both ends toward the middle, so that the strength of the curve drawing soft ruler is from the middle end The setting gradually weakens towards the middle intensity.

Optionally, the thickness of the soft ruler body is gradually thinned from both ends toward the middle, so that the strength of the soft ruler body is weakened from the two ends toward the middle; or,

The width of the flexible ruler body is gradually narrowed from both ends toward the middle, so that the strength of the flexible ruler body is gradually weakened from the two ends toward the middle; or,

The flexible ruler body is provided with a plurality of openings, the plurality of openings are arranged along a length direction of the flexible ruler body, and in a direction from both ends of the flexible ruler body toward the middle, the The opening area of the main body of the soft ruler is gradually increased, so that the strength of the main body of the soft ruler is gradually weakened from both ends toward the middle; or,

At least one long side of the soft ruler body is provided with a plurality of notches. The notches provided on the same long side are in the direction from the two ends of the soft ruler body toward the middle, and the notch area is Gradually increase the setting.

Optionally, the plurality of openings are arranged in a row along the length direction of the soft ruler body, and the area of the opening gradually becomes larger in a direction close to the middle of the soft ruler body.

Optionally, the plurality of openings are arranged in two rows along the length direction of the metal sheet, the two rows of openings are respectively disposed near the two long sides of the metal sheet, and are located near the metal In the middle direction of the sheet, the area of the openings in the same row is gradually increased, so that the strength of the metal sheet is gradually weakened from both ends toward the middle.

Optionally, the plurality of openings are all oval, square or shaped.

Optionally, a scale line is provided on the main body of the soft ruler.

Optionally, the curve drawing soft ruler further includes an outer layer made of an elastic material, and the outer layer is wrapped around the main body of the soft ruler;

The main body of the soft ruler is a metal sheet.

Optionally, the material of the outer layer is TPU or silicone.

Optionally, a scale line is provided on the outer layer; or, the outer layer is provided transparently, and a scale is provided on the main body of the soft ruler.

The present application also provides a curve drawing device, including a curve drawing soft ruler, the curve drawing soft ruler includes a soft ruler body, and the soft ruler body is provided with a structure in which the intensity gradually decreases from both ends toward the middle, to The intensity of the soft ruler for drawing the curve is gradually weakened from the middle to the middle.

Beneficial effect

The present application has the following effect: the intensity of the curve drawing soft ruler is gradually weakened from both ends toward the intermediate intensity, and therefore, when it is positioned at the middle to form the vertex of the curve, and the positions on both sides of the middle position are positioned separately, The closer to the middle position, the smaller the strength, and the easier it is to fix the positioning point and bend to a larger curvature setting, which can improve the problem that the accuracy of the soft ruler in the related art when the curve is made through a specific point is not high.

BRIEF DESCRIPTION

FIG. 1 is a schematic front view of a first embodiment of a first group of soft rulers for curve plotting provided by this application;

FIG. 2 is a schematic front view of a second embodiment of the first group of soft rulers for curve plotting provided by this application; FIG.

FIG. 3 is a schematic front view of a third embodiment of the first group of soft rulers for curve plotting provided by this application; FIG.

4 is a schematic front view of a fourth embodiment of the first group of soft rulers for curve plotting provided by this application;

5 is a schematic side view of a fifth embodiment of the first group of soft rulers for curve plotting provided by this application;

6 is a schematic side view of the second group of embodiments of the second embodiment of the curve-plotting soft rule provided by this application;

7 is a schematic front view of a first embodiment of a second group of soft rulers for curve plotting provided by this application;

8 is a schematic front view of a second embodiment of a second group of soft rulers for curve plotting provided by this application;

9 is a schematic front view of a third embodiment of the second group of soft rulers for curve plotting provided by this application;

10 is a schematic front view of a fourth embodiment of a second group of soft rulers for curve plotting provided by this application;

FIG. 11 is a schematic side view of a fifth embodiment of the second group of soft rulers for curve plotting provided by this application; FIG.

FIG. 12 is a schematic diagram of the curve drawing in FIG. 1 or FIG. 6 when the soft ruler is bent.

Embodiments of the invention

The technical solution of the present application will be further described below with reference to the drawings.

FIGS. 1 to 5 are the first group of embodiments of the curve mapping soft ruler 100 provided by this application, and FIGS. 6 to 11 are the second group of embodiments of the curve mapping soft ruler 100 provided by this application. Figure to introduce:

Please refer to FIG. 1 to FIG. 5, the curve drawing soft ruler 100 includes a soft ruler body 10, and the soft ruler body 10 is provided with a structure in which the intensity gradually decreases from both ends toward the middle, so that the curve drawing soft The strength of the ruler 100 gradually decreases from the middle to the middle.

The strength of the curve drawing soft ruler 100 is gradually weakened from both ends toward the middle strength. Therefore, when the middle is positioned to form the vertex of the curve, when the positions on both sides of the middle position are positioned separately, therefore, the closer to the middle position The strength becomes smaller, and the easier it is to fix the positioning point and bend it to a larger curvature setting, which can improve the problem that the accuracy of the soft ruler in the related art when the curve is made through a specific point is not high.

The curve drawing soft ruler 100 may include only the soft ruler body 10 or other structures, and the soft ruler body 10 may have only one component or a combination of several components, here There is no limitation, and the material of the soft ruler body 10 is not limited, and it may be metal or soft rubber or silicone, etc., and optionally, the curve drawing soft ruler 100 includes only the soft ruler body 10, and the soft ruler body 10 adopts a one-piece structure, and the structure is simple.

In addition, the soft ruler body 10 may also be provided with a scale to measure the length of the curve.

There are many ways to realize that the strength of the soft ruler body 10 gradually decreases from both ends toward the middle strength, which will be described below with reference to specific drawings:

For example, as shown in FIGS. 1 and 2, the flexible ruler body 10 is provided with a plurality of openings (10a / 10b), and the plurality of openings (10a / 10b) are along the length of the flexible ruler body 10 Are arranged in the direction, and in the direction from both ends of the flexible ruler body 10 toward the middle, the opening area of the flexible ruler body 10 is gradually increased to make the strength of the flexible ruler body 10 from Both ends gradually weaken the setting towards the middle.

The shape of the plurality of openings (10a / 10b) is not limited, for example, the plurality of openings (10a / 10b) are all arranged in an oval shape, a square shape, or a special shape.

Specifically, as shown in FIG. 1, in the first embodiment of the first group provided in the present application, the plurality of openings 10a are arranged in a row along the length direction of the soft ruler body 10, and In the direction close to the middle of the soft ruler body 10, the area of the opening 10a gradually becomes larger. In this embodiment, the opening 10a is oval.

Specifically, as shown in FIG. 2, in the second embodiment of the second group provided in the present application, the plurality of openings 10 b are arranged in two rows along the length direction of the soft ruler body 10, so The two rows of openings 10b are respectively arranged near the two long sides of the flexible ruler body 10, and in the direction near the middle of the flexible ruler body 10, the area of the openings 10b in the same row is gradually increased, In this way, the strength of the soft ruler body 10 is gradually weakened from both ends toward the middle. The opening 10b is provided in a special shape.

For another example, as shown in FIG. 3, FIG. 3 is a third embodiment of the first group provided in this application. At least one long side of the soft ruler body 10 is provided with a plurality of notches 10c (specifically, In the embodiment, the two long sides of the soft ruler body 10 are provided with notches 10c). The plurality of notches 10c provided on the same long side are from the two ends of the soft ruler body 10 toward the middle. In the direction, the gap area gradually increases.

For another example, as shown in FIGS. 4 and 5, the width and thickness of the flexible ruler body 10 can also be changed so that the strength of the flexible ruler body 10 gradually decreases from both ends toward the middle strength:

Specifically, as shown in FIG. 4, in the fourth embodiment of the first group provided by the present application, the width of the flexible ruler body 10 is gradually narrowed from both ends toward the middle, so that the flexible ruler The strength of the main body 10 is gradually weakened from both ends toward the middle.

Specifically, as shown in FIG. 5, in the fifth embodiment of the first group provided by the present application, the thickness of the flexible ruler body 10 is gradually thinned from both ends toward the middle, so that the flexible ruler body The intensity of 10 gradually weakens the setting from both ends toward the middle.

Obviously, the design is not limited to the above-mentioned embodiment, and the strength of the flexible ruler body 10 may be changed in other ways, so that the strength of the flexible ruler body 10 is gradually weakened from both ends toward the middle, so that the flexible ruler body 10 The external force makes it easy to bend near the middle as shown in Figure 12.

Please refer to FIG. 6 to FIG. 11. FIG. 6 to FIG. 11 are the second group of embodiments of the curve mapping soft ruler provided by the present application. In this group of embodiments, the curve mapping soft ruler 100 includes an elastic material. Formed into an outer layer 1 and a metal sheet 2, wherein the outer layer 1 is wrapped around the metal sheet 2, and the metal sheet 2 can be the structure of the flexible ruler body 2 in the first group of embodiments. The metal sheet 2 is set to be gradually weakened from the two ends toward the middle strength, so that the strength of the curve drawing soft ruler 100 is gradually weakened from the two ends toward the middle strength.

The material of the outer layer 1 is not limited, and may be various rubbers or other materials with good elasticity, etc. Specifically, for example, the material of the outer layer is TPU or silicone. The outer layer 1 and the metal sheet 2 may be integrally formed by injection molding, or other methods may be used.

In addition, the curve drawing soft ruler 100 may also be provided with a scale to measure the length of the curve, and the position of the scale is not limited. For example, the outer layer 1 is provided with a tick mark; or, the outer layer 1 is Transparent setting, the metal sheet 2 is provided with scales.

The material of the metal sheet is not limited, and the main requirement is to ensure that the metal sheet has good toughness and can be bent multiple times without breaking, such as a copper sheet.

There are many ways to realize that the strength of the metal sheet 2 gradually decreases from both ends toward the middle strength, which will be described below in conjunction with specific drawings:

For example, as shown in FIGS. 7 and 8, the metal sheet 2 is provided with a plurality of openings (2a / 2b), and the plurality of openings (2a / 2b) are arranged along the longitudinal direction of the metal sheet 2 Cloth, and in the direction from the two ends of the metal sheet 2 toward the middle, the opening area of the metal sheet 2 is gradually increased so that the strength of the metal sheet 2 gradually increases from the two ends toward the middle Reduce the setting.

The shape of the plurality of openings (2a / 2b) is not limited, for example, the plurality of openings (2a / 2b) are all arranged in an oval shape, a square shape, or a special shape.

Specifically, as shown in FIG. 7, in the first embodiment of the second group provided in this application, the plurality of openings 2 a are arranged in a row along the length direction of the metal sheet 2, and In the direction close to the middle of the metal sheet 2, the area of the opening 2a gradually becomes larger. In this embodiment, the opening 2a is provided in an oval shape.

Specifically, as shown in FIG. 8, in the second embodiment of the second group provided in this application, the plurality of openings 2 b are arranged in two rows along the length direction of the metal sheet 2, The two rows of openings 2b are respectively arranged near the two long sides of the metal sheet 2, and in the direction close to the middle of the metal sheet 2, the area of the openings 2b in the same row is gradually increased, so that The strength of the metal sheet 2 is gradually weakened from both ends toward the middle.

For another example, as shown in FIG. 9, FIG. 9 is a third embodiment of the second group provided in this application, at least one long side of the metal sheet 2 is provided with a plurality of notches 2c (specifically, in this embodiment In the example, both long sides of the metal sheet 2 are provided with notches 2c), and the plurality of notches 2c provided on the same long side are in a direction from both ends of the metal sheet 2 toward the middle, The gap area is gradually increased.

As another example, as shown in FIGS. 10 and 11, the width and thickness of the metal sheet 2 may be changed so that the strength of the metal sheet 2 gradually decreases from both ends toward the middle strength:

Specifically, as shown in FIG. 10, in the fourth embodiment of the second group provided by the present application, the width of the metal sheet 2 is gradually narrowed from both ends toward the middle, so that the metal sheet 2 The intensity gradually decreases from both ends towards the middle.

Specifically, as shown in FIG. 11, in the fifth embodiment of the second group provided by the present application, the thickness of the metal sheet 2 is gradually thinned from both ends toward the middle, so that the thickness of the metal sheet 2 The intensity gradually decreases from both ends toward the middle.

Obviously, the design is not limited to the above-mentioned embodiment, and the strength of the metal sheet 2 can be changed in other ways, so that the strength of the metal sheet 2 is gradually weakened from both ends toward the middle, so that the metal sheet 2 is exposed to external forces. Under the effect of, it is easy to bend near the middle as shown in Figure 12.

The present application also provides a curve drawing device. The curve drawing device includes the curve drawing soft ruler provided in any of the foregoing embodiments, and may also include other structures for shaping the soft ruler, such as the shaping structure in the patent CN106739686A.

The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformations made by the description and drawings of the present application under the inventive concept of the present application, or direct / indirect Applications in other related technical fields are included in the patent protection scope of this application.

Claims

A curve drawing soft ruler, which includes a soft ruler body, the soft ruler body is provided with a structure that gradually decreases in strength from both ends toward the middle, and is configured such that the strength of the curve drawing soft ruler is directed from both ends The intermediate intensity gradually weakens the setting.
A curve drawing soft ruler according to claim 1, wherein the thickness of the soft ruler body is gradually thinned from both ends toward the middle, and is configured such that the strength of the soft ruler body decreases from both ends toward the middle Settings; or,

The width of the soft ruler body is gradually narrowed from both ends toward the middle, and is configured such that the strength of the soft ruler body is gradually weakened from both ends toward the middle; or,

The flexible ruler body is provided with a plurality of openings, the plurality of openings are arranged along a length direction of the flexible ruler body, and in a direction from both ends of the flexible ruler body toward the middle, the The opening area of the main body of the soft ruler is gradually increased and is configured such that the strength of the main body of the soft ruler gradually decreases from the two ends toward the middle; or,

At least one long side of the soft ruler body is provided with a plurality of notches. The notches provided on the same long side are in the direction from the two ends of the soft ruler body toward the middle, and the notch area is Gradually increase the setting.
A curve-drawing soft ruler according to claim 2, wherein the plurality of openings are arranged in a row along the length direction of the soft ruler body, and in the middle near the soft ruler body Direction, the area of the opening gradually becomes larger.
The curve drawing soft ruler according to claim 2, wherein the plurality of openings are arranged in two rows along the length direction of the metal sheet, and the two rows of openings are respectively close to the metal sheet The two long sides are arranged, and in the direction close to the middle of the metal sheet, the area of the openings in the same row is gradually increased, configured so that the strength of the metal sheet is gradually weakened from both ends toward the middle .
A curve-drawing soft ruler according to claim 2, wherein the plurality of openings are all arranged in an oval shape, a square shape or a special shape.
The soft ruler with curve drawing according to claim 1, wherein a scale line is provided on the main body of the soft ruler.
A curve drawing soft ruler according to any one of claims 1 to 6, wherein an outer layer made of an elastic material is further included, and the outer layer is arranged around the main body of the soft ruler;

The main body of the soft ruler is a metal sheet.
A curve drawing soft ruler according to claim 7, wherein the material of the outer layer is TPU or silicone.
The soft ruler with curve drawing according to claim 7, wherein a scale line is provided on the outer layer; or, the outer layer is provided transparently, and a scale is provided on the main body of the soft ruler.
A curve drawing device comprising a curve drawing soft ruler according to any one of claims 1 to 9.