CN201922763U

CN201922763U - Multifunctional right angle triangle ruler

Info

Publication number: CN201922763U
Application number: CN2011200083203U
Authority: CN
Inventors: 张书霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-01
Filing date: 2011-01-01
Publication date: 2011-08-10
Anticipated expiration: 2021-01-01

Abstract

A multifunctional right angle triangle ruler comprises a right angle triangle ruler, a sleeve chuck and a centering point, and is characterized in that a rectangular dead slot is formed on the long right-angle side of the right angle triangle ruler along an axial line; the sleeve chuck is movably sleeved on the long right-angle side of the right angle triangle ruler; a circle drawing hole is formed in the center of the front side of the sleeve chuck; the circle drawing hole corresponds to the dead slot; a fastening screw is arranged on one side of the sleeve chuck, which is near an inner triangle; the centering point is arranged on the back side of the right angle triangle ruler; the centering point corresponds to the position of the scale 0 on the front side; both the centering point and the center of the circle drawing hole are positioned on the axial line of the long right-angle side; the right angle triangle ruler can be used for scribing, measuring length and drawing circles; during circle drawing, the sleeve chuck is moved to the position of the radius of a required circle, then the fastening screw is fastened, the centering point is drawn in the position of the centre of the circle, a pen is inserted into the circle drawing hole, and then circle drawing can be performed; and the multifunctional right angle triangle ruler has the advantages that the structure is simple, the manufacture is easy, the cost is low, the use and the carrying are convenient, and the popularization is very easy.

Description

The multipurpose drawing square

Technical field

The utility model relates to a kind of teaching aid, relates to a kind of multipurpose drawing square specifically.

Background technology

In teaching, often to use set square, compasses etc., use the set square setting-out, draw circle with compasses, if ruler, compasses, all be with relatively more burdensome, trouble, now commercially available drawing square purposes is single, China application (patent) number 200920269733.X, by name " a kind of mathematics teaching aid of special use " and China apply for (patent) numbers 96250155.7, " multipurpose geometric chi " by name, though improve to some extent, complex structure distracts the attention of the students easily, and the weight increase is a lot, carries inconvenience.

Summary of the invention

The purpose of this utility model is the contradiction at above-mentioned prior art scheme, and a kind of multipurpose drawing square is provided, and it can solve this contradiction effectively, thereby improves teaching, operating efficiency.

Technical solution of the present utility model is: a kind of multipurpose drawing square, comprise drawing square, cutting ferrule, centering point, it is characterized in that: axis is opened a rectangle dead slot in the long right-angle side upper edge of described drawing square, and cutting ferrule is actively socketed on the long right-angle side of drawing square.

Be provided with one in the positive central authorities of described cutting ferrule and draw circular hole, draw the corresponding dead slot of circular hole, near an interior leg-of-mutton side one holding screw is set at cutting ferrule.

Described centering point is arranged on the back side of drawing square, corresponding positive " 0 " the scale place of this centering point, and should the centering point with the hole heart of picture circular hole all on the axis of long right-angle side.

Utilize this ruler can rule, measure length, draw circle, draw bowlder, mobile cutting ferrule is to required radius of a circle place, and holding screw presses centering at the circle centre position that will draw again, be inserted in one-pen just can draw in the picture circular hole of cutting ferrule round.

The utility model is simple in structure, easy to manufacture, cost is low, and use, easy to carry is very easily promoted.

Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make the concrete conversion of a lot of forms, these all belong within the protection domain of the present utility model.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the utility model rearview

Wherein: the long right-angle side of 1-, the 2-cutting ferrule, 3-draws circular hole, 4-holding screw, 5-dead slot, 6-drawing square, the 7-point of feeling relieved.

The specific embodiment

As shown in Figure 1 and Figure 2, a kind of multipurpose drawing square, comprise drawing square 6, cutting ferrule 2, centering point 7, it is characterized in that: open a rectangle dead slot 5 at the long right-angle side 1 upper edge axis of described drawing square 6, cutting ferrule 2 is actively socketed on the long right-angle side 1 of drawing square 6.

Be provided with one in described cutting ferrule 2 positive central authorities and draw circular hole 3, draw circular hole 3 corresponding dead slots 5, near interior leg-of-mutton sides one holding screw 4 is set at cutting ferrule 2.

Described centering point 7 is arranged on the back side of drawing square 6, " 0 " the scale places in these point 7 correspondence fronts of feeling relieved, and the hole heart of should feel relieved point 7 and picture circular hole 3 is all on the axis of long right-angle side 1.

Utilize this ruler can rule, measure length, draw circle, draw bowlder, mobile cutting ferrule 2 is to required radius of a circle place, and holding screw 4 again, with centering point 7 by at the circle centre position that will draw, be inserted in one-pen just can draw in the picture circular hole 3 of cutting ferrule 2 round.

Claims

1. multipurpose drawing square, comprise drawing square (6), cutting ferrule (2), centering point (7), it is characterized in that: axis is opened a rectangle dead slot (5) in long right-angle side (1) upper edge of described drawing square (6), and cutting ferrule (2) is actively socketed on the long right-angle side (1) of drawing square (6).

2. multipurpose drawing square according to claim 1, it is characterized in that: be provided with one in the positive central authorities of described cutting ferrule (2) and draw circular hole (3), draw the corresponding dead slot of circular hole (3) (5), near an interior leg-of-mutton side one holding screw (4) is set at cutting ferrule (2).

3. multipurpose drawing square according to claim 1, it is characterized in that: described centering point (7) is arranged on the back side of drawing square (6), this positive " 0 " scale place of point (7) correspondence that feels relieved, and the hole heart of should feel relieved point (7) and picture circular hole (3) is all on the axis of long right-angle side (1).