CN205588844U

CN205588844U - Draw triangle -shaped and tetragonal ruler

Info

Publication number: CN205588844U
Application number: CN201521025320.9U
Authority: CN
Inventors: 王羽
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-11
Filing date: 2015-12-11
Publication date: 2016-09-21
Anticipated expiration: 2025-12-11

Abstract

The utility model belongs to a ruler of drawing, concretely relates to draw triangle -shaped and tetragonal ruler, including 4 straight boards, first straight board, the straight board of second, the straight board of third, the straight board of fourth promptly, first straight board passes through hinge swing joint with the straight board of second, first straight board has been offered and has been used for the straight board male of third is first to link up the spacing groove, the straight board of third passes through hinge swing joint with the straight board of fourth, the straight board of fourth has been offered and has been used for the straight board male second of second link up the spacing groove, the straight board of third insert in firstly link up the spacing groove, the straight board of second insert in the second link up the spacing groove, the inboard border of the inboard border of first straight board, the inboard border of the straight board of second, the straight board of third is equipped with the size scale respectively with the inboard border of the straight board of fourth. The problem of the picture that mr drew among the prior art imbalance, the accuracy is not enough is solved, have that thereby the proportion of drawing is good, the advantage of the high favourable teaching of accuracy.

Description

A kind of ruler drawing triangle and tetragon

Technical field

This utility model belongs to the ruler of a kind of picture, is specifically related to a kind of ruler drawing triangle and tetragon.

Background technology

When teacher lectures plane geometry course at present, it is often necessary to draw some planar graphs, such as triangle on blackboard Or tetragon etc., teacher is the triangle chi with a solid shape or ruler, even direct without ruler With one triangle of drawing with coloured chalk or tetragon, use the triangle chi of solid shape to draw, need the most arbitrarily to draw three lines and enclose Triangularity, arbitrarily draws four lines and surrounds tetragon, and the figure so drawn is out of proportion, and degree of accuracy is inadequate, and teacher is drawing Time need the position repeatedly changing ruler to delineate lines, operation inconvenience, and without ruler directly with one triangle of drawing with coloured chalk Shape or tetragon, the figure ratio that such picture mode is drawn also can lack of proper care, and degree of accuracy is also inadequate, and draws in the plane of level Also identical problem can be run into.

For the ease of teaching, it is necessary to draw a ratio on blackboard to student preferable, the figure that degree of accuracy is higher.

Utility model content

When the purpose of this utility model is to overcome that in prior art, teacher draws planar graph on blackboard, due to existing picture The limitation of ruler, the figure of picture is out of proportion, the problem that degree of accuracy is inadequate.

To this end, this utility model provides a kind of ruler drawing triangle and tetragon, including 4 straight plates, i.e. first is straight Plate, the second straight plate, the 3rd straight plate, the 4th straight plate, the described first straight plate and the second straight plate are connected by articulate, and described first Straight plate offers the first through stopper slot inserted for the described 3rd straight plate, and the described 3rd straight plate and the 4th straight plate pass through hinge Being flexibly connected, the described 4th straight plate offers the second through stopper slot inserted for the described second straight plate, the described 3rd straight plate Being inserted in described first through stopper slot, the described second straight plate is inserted in described second through stopper slot；Described first straight plate Inner side edge edge, the inner side edge edge of the second straight plate, the inner side edge of the 3rd straight plate are respectively equipped with chi along the inner side edge edge with the 4th straight plate Very little scale.

The groove width of described first through stopper slot is identical with the thickness of the described 3rd straight plate.

The groove width of described second through stopper slot is identical with the thickness of the described second straight plate.

The beneficial effects of the utility model:

1) this utility model is by the inner side edge at these 4 straight plates along the size scale arranged, and can regulate very easily The length dimension of these 4 straight plates, makes these 4 straight plates constitute 4 length scale chis, thus regulates the various shapes surrounded as required The delta-shaped region of shape or quadrilateral area, such as, can surround right angled triangle, square, rhombus etc., this utility model phase Than the picture ruler more multiformity of traditional solid shape, function is more, thus draws triangle or tetragon, thus draws ratio The figure that example is good, degree of accuracy is high, it is simple to teaching.

2) this utility model is plugged together by the form of the first through stopper slot, the second through stopper slot and to be stitched together, institute With easily dismounting, need not use when, this picture ruler can be splitted into two parts, it is easier to depositing, minimizing takies Space.

3) this utility model is by the structure identical with thickness of groove width between them, so that the first straight plate and the 3rd straight Plate, the frictional force of the cooperation between the second straight plate and the 4th straight plate is some larger, the interference fits being similar in machinery, makes them Can relative movement or closely cooperate in the case of rotating, it is to avoid this ruler is easily slided between straight plate and straight plate when vertically placing Fall.

Below with reference to accompanying drawing, this utility model is described in further details.

Accompanying drawing explanation

Fig. 1 is the schematic diagram that embodiment surrounds delta-shaped region.

Fig. 2 is the first straight plate after the fractionation of Fig. 1 and the structural representation of the second straight plate.

Fig. 3 is the top view of Fig. 2.

The straight plate of after the fractionation of Fig. 4 Fig. 1 the 3rd and the structural representation of the 4th straight plate.

Fig. 5 is the top view of Fig. 4.

Fig. 6 is the schematic diagram that embodiment surrounds quadrilateral area.

Description of reference numerals: 1, the first straight plate；1-1, the inner side edge edge of the first straight plate；1-2；First through stopper slot；2、 Second straight plate；2-1, the inner side edge edge of the second straight plate；3, the 3rd straight plate；3-1, the inner side edge edge of the 3rd straight plate, the 4, the 4th straight plate； 4-1, the inner side edge edge of the 4th straight plate；4-2, the second through stopper slot；5, delta-shaped region；6, quadrilateral area.

Detailed description of the invention

Embodiment 1:

As it is shown in figure 1, present embodiments provide a kind of ruler drawing triangle and tetragon, including 4 straight plates, i.e. first Straight plate 1, second straight plate the 2, the 3rd straight plate 4 of straight plate the 3, the 4th, the most described first straight plate 1 and the second straight plate 2 pass through hinge Being flexibly connected, the most described first straight plate 1 offers the first through stopper slot 1-inserted for the described 3rd straight plate 3 2, the most described 3rd straight plate 3 is connected by articulate with the 4th straight plate 4, and the most described 4th straight plate 4 is opened Being provided with the second through stopper slot 4-2 inserted for the described second straight plate 2, the described 3rd straight plate 3 is inserted in described first through Stopper slot 1-2, the described second straight plate 2 is inserted in described second through stopper slot 4-2, and the inner side edge of the described first straight plate 1 is along 1- 1, the inner side edge of the second straight plate 2 sets along 4-1 along the inner side edge of 2-1, the 3rd straight plate 3 respectively along the inner side edge of the straight plate 4 of 3-1 and the 4th There is size scale.

Operation principle is as follows:

Shown in Fig. 1, Fig. 3, Fig. 5, Fig. 6, the above-mentioned first straight plate 1 is connected by articulate with the second straight plate 2, so Can relatively rotate between them, the 3rd straight plate 3 is connected by articulate with the 4th straight plate 4, so can also between them Relatively rotate, during wherein the second straight plate 2 runs through the second through stopper slot 4-2 that insertion the 4th straight plate 4 is offered, permissible between them Relative movement or rotation, wherein the 3rd straight plate 3 runs through and inserts in the first through stopper slot 1-2 of offering of the first straight plate 1, they it Between can also relative movement or rotation, as shown in Fig. 1 or Fig. 6, the first straight plate 1, second straight plate the 2, the 3rd straight plate 4 of straight plate the 3, the 4th Can surround delta-shaped region 5 as shown in Figure 1, quadrilateral area 6 as shown in Figure 6, before picture, with reference to Fig. 1, Fig. 6 institute Showing, the present embodiment along the size scale arranged, can regulate this 4 straight plates by the inner side edge at these 4 straight plates very easily Length dimension, make this 4 straight plates constitute 4 length scale chis, thus regulate the variously-shaped triangle surrounded as required Shape region 5 or quadrilateral area 6, such as, can surround right angled triangle, square, rhombus etc., and it is solid that the present embodiment compares tradition The picture ruler more multiformity of shaped, function is more.During picture operation, this ruler can be positioned in plane directly edge The region surrounded inside it is drawn, thus draws triangle or tetragon, it is also possible to by a people by this instrument by black On plate, another person draws along the region surrounded inside it, thus draws triangle or tetragon, thus draws ratio The figure good, degree of accuracy is high, it is simple to teaching.

Additionally, the ruler of this structure is by then passing through the first through stopper slot 1-2, the form of the second through stopper slot 4-2 Plug together and be stitched together, so easily dismantling, need not with when, this picture ruler can be splitted into such as Fig. 2, Fig. 4 Shown two parts, it is easier to deposit, minimizing takes up room.

Embodiment 2:

On the basis of embodiment 1, shown in Fig. 3 Fig. 5, the groove of the first through stopper slot 1-2 that the present embodiment uses Wide identical with the thickness of the 3rd straight plate 3.The groove width of general second through stopper slot 4-2 is also identical with the thickness of the second straight plate 2.

The present embodiment passes through the structure that between them, groove width is identical with thickness, so that the first straight plate 1 and the 3rd straight plate 3, The frictional force coordinated between second straight plate 2 and the 4th straight plate 4 is some larger, the interference fits being similar in machinery, makes them Can relative movement or closely cooperate in the case of rotating, it is to avoid this ruler is easily slided between straight plate and straight plate when vertically placing Fall.

Exemplified as above is only to illustration of the present utility model, is not intended that protection domain of the present utility model Limit, within the every and same or analogous design of this utility model belongs to protection domain of the present utility model.

Parts that the present embodiment describes the most in detail and structure belong to the well-known components of the industry and common structure or conventional hands Section, describes the most one by one.

Claims

1. the ruler drawing triangle and tetragon, it is characterised in that: include 4 straight plates, the i.e. first straight plate (1), second straight Plate (2), the 3rd straight plate (3), the 4th straight plate (4),

Described first straight plate (1) is connected by articulate with the second straight plate (2), and the described first straight plate (1) offers for institute State the first through stopper slot (1-2) that the 3rd straight plate (3) is inserted,

Described 3rd straight plate (3) is connected by articulate with the 4th straight plate (4), and the described 4th straight plate (4) offers for institute State the second through stopper slot (4-2) that the second straight plate (2) is inserted,

Described 3rd straight plate (3) is inserted in described first through stopper slot (1-2), and the described second straight plate (2) is inserted in described Two through stopper slots (4-2)；

The inner side edge of the described first straight plate (1) along (1-1), inner side edge edge (2-1) of the second straight plate (2), the 3rd straight plate (3) interior Side is respectively equipped with size scale along the inner side edge of (3-1) with the 4th straight plate (4) along (4-1).

2. picture triangle as claimed in claim 1 and the ruler of tetragon, it is characterised in that: described first through stopper slot (1-2) groove width is identical with the thickness of the described 3rd straight plate (3).

3. picture triangle as claimed in claim 1 and the ruler of tetragon, it is characterised in that: described second through stopper slot (4-2) groove width is identical with the thickness of the described second straight plate (2).