CN204414926U - Ruler - Google Patents

Abstract

The utility model discloses a kind of ruler, comprise main scale and secondary chi, main scale to be an acute angle the be drawing square of 30 degree, secondary chi is isosceles drawing square, main scale and secondary chi hinged by the seat that removably connects, the seat that removably connects comprises main sleeve pipe, secondary case pipe and contact pin, main sleeve pipe is positioned at the chi body side surface of main scale, secondary case pipe is positioned at the hypotenuse side of secondary chi, and main casing diameter is identical with secondary casing diameter, and contact pin is arranged through main sleeve pipe and secondary case pipe.The purpose of this utility model is to provide a kind of ruler, main scale and secondary chi is detachably articulated and connected, and avoids main scale and is separated with secondary chi when arranging, the situation of another lost block, using, being extracted by contact pin to be separated, main scale and secondary chi and separable.

Description

Ruler

Technical field

The utility model relates to a kind of educational aid instrument, and more particularly, it relates to a kind of ruler.

Background technology

Ruler and compasses are the basic tools for painting and mapping, and are essential in each Students ' Learning.Wherein, primary school's epoch will professor's method of utilizing two right angle triangles to draw parallel lines, the method is: first draw straight line, then set square limit is allowed to overlap with known straight line, another limit of first set square overlaps with a limit of second set square, under the prerequisite that guarantee second set square is motionless, the limit allowing first set square overlap along two set squares is moved, then cross the limit overlapped with known straight line and draw straight line, its foundation is exactly " corresponding angles are equal, two straight line parallels ".Because study burden of students ' is heavier, too much for learning tool, sometimes can not find two pieces of set squares, now, just not draw parallel lines.How to design a right angle triangle combination ruler not easily lost and become urgent need to solve the problem.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of ruler, main scale and secondary chi is detachably articulated and connected, avoiding main scale is separated when arranging with secondary chi, the situation of another lost block, uses to be separated, contact pin is extracted, main scale and secondary chi and separable.

For achieving the above object, the utility model provides following technical scheme: a kind of ruler, comprise main scale and secondary chi, main scale to be an acute angle the be drawing square of 30 degree, secondary chi is isosceles drawing square, main scale and secondary chi hinged by the seat that removably connects, the seat that removably connects comprises main sleeve pipe, secondary case pipe and contact pin, and main sleeve pipe is positioned at the chi body side surface of main scale, and secondary case pipe is positioned at the hypotenuse side of secondary chi, main casing diameter is identical with secondary casing diameter, and contact pin is arranged through main sleeve pipe and secondary case pipe.

By adopting technique scheme, main scale and secondary chi are detachably articulated and connected, when needs draw parallel lines, contact pin is extracted out from main sleeve pipe and secondary case pipe, removes spacing, main scale is separated with secondary chi, thus main scale and secondary chi are with the use of drawing drawing, effectively can avoid main scale is separated when arranging simultaneously with secondary chi, the situation that another block is easily lost, causes some problems of simply mapping that can not complete in drawing.

The utility model is set to further: the chi body of described secondary chi is provided with semicircle, and its home position is provided with center of circle retainer plate.

By adopting technique scheme, after secondary chi disassembles, the semicircle on secondary chi can be used for picture circle, and contact pin insertion center of circle retainer plate is used for determining home position, and the circle drawn will more accurate and specification.

The utility model is set to further: described contact pin is supporting is provided with spacing intubate, and the sheathed connecting contact pin end of spacing intubate, spacing cannula diameter is less than main casing diameter.

By adopting technique scheme, the effect of spacing intubate is for fixing plug pin position, and when avoiding main scale to be connected with secondary chi, contact pin departs from sleeve pipe, main scale is separated with secondary chi, contact pin also can be avoided to come off, there is potential safety hazard.

The utility model is set to further: described main sleeve pipe place axis and right-angle side are 45 degree,

By adopt technique scheme, can make main scale parallel with the right-angle side of secondary chi or laminating, revolute chi just can be utilized time parallel to complete the making of parallel lines, be convenient to during laminating collect, new drift angle can not be had more, the less potential safety hazard that may exist.

The utility model is set to further: the right-angle side of described main scale and secondary chi overlaps.

By adopting technique scheme, being convenient to collection, can not drift angle being had more and increase overall volume.

The utility model is set to further: the right-angle side of described main scale and secondary chi is parallel to each other.

By adopting technique scheme, under main scale and secondary chi not separation case, its structure also can be utilized to paint drawing---parallel lines etc.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of the utility model ruler embodiment;

Top view when Fig. 2 is the utility model ruler pair chi laminating main scale surface;

Fig. 3 is the front view of the utility model ruler;

Fig. 4 is another angle schematic diagram of the utility model ruler;

Fig. 5 is the structural representation of the utility model contact pin and spacing intubate;

State diagram when Fig. 6 is the utility model contact pin positional sub-scale.

Accompanying drawing marks: 1, main scale; 2, secondary chi; 3, main sleeve pipe; 4, secondary case pipe; 5, contact pin; 6, limit casing; 7, center of circle retainer plate.

Detailed description of the invention

Referring to figs. 1 through Fig. 6, the utility model ruler embodiment is described further.

As shown in Figures 1 to 6, a kind of ruler, comprises main scale 1 and secondary chi 2, main scale 1 to be an acute angle the be right angle trigonometry limit of 30 degree, and secondary chi 2 is isosceles drawing square, main scale 1 and secondary chi 2 hinged by the seat that removably connects.The seat that removably connects comprises main sleeve pipe 3, secondary case pipe 4 and contact pin 5, and main sleeve pipe 3 is positioned at the chi body side surface of main scale 1, and secondary case pipe 4 is positioned at the hypotenuse side of secondary chi 2, and contact pin 5 is supporting is provided with spacing intubate.Main sleeve pipe 3 diameter is identical with secondary case pipe 4 diameter, and contact pin 5 diameter is less than main sleeve pipe 3 diameter, and spacing cannula diameter is less than main sleeve pipe 3 diameter slightly larger than contact pin 5 diameter.

Preferably, the chi body of described secondary chi 2 is provided with semicircle, and its home position is provided with center of circle retainer plate 7.After secondary chi 2 disassembles, the semicircle on secondary chi 2 can be used for picture circle, and contact pin 5 inserts center of circle retainer plate 7 for determining home position, and the circle drawn will more accurate and specification.

Preferably, the effect of limit casing 6 is for fixing plug pin 5 position, and when avoiding main scale 1 to be connected with secondary chi 2, contact pin 5 departs from sleeve pipe, main scale 1 is separated with secondary chi 2, contact pin 5 also can be avoided to come off, there is potential safety hazard.

Preferably, main sleeve pipe place axis and right-angle side are 45 degree, and now the right-angle side of main scale 1 and secondary chi 2 can parallel or laminating, revolute chi 2 just can be utilized time parallel to complete the making of parallel lines, be convenient to collection during laminating, new drift angle can not be had more, the less potential safety hazard that may exist.

Main scale 1 and secondary chi 2 are detachably articulated and connected, avoid main scale 1 and is separated with secondary chi 2 when arranging, the situation of another lost block, if loss wherein a piece, just some that can not complete in drawing are simply mapped.When needs draw parallel lines, contact pin 5 is extracted out from main sleeve pipe 3 and secondary case pipe 4, lifts restrictions, main scale 1 is separated with secondary chi 2.

As another kind of embodiment of the present utility model: described main sleeve pipe 3 can be arranged on a slide block, now, main sleeve pipe place axis and right-angle side are 45 degree, main scale 1 is provided with chute (not shown), right-angled apices is pointed in chute direction, make in slide block slipping, main sleeve pipe 3 moment and right-angle side keep 45 degree.Now, the drawing that secondary chi 2 can meet the parallel lines of different spacing need not be dismantled.

The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (6)

1. a ruler, it is characterized in that: comprise main scale and secondary chi, described main scale to be an acute angle the be drawing square of 30 degree, secondary chi is isosceles drawing square, described main scale and secondary chi hinged by the seat that removably connects, described in the seat that removably connects comprise main sleeve pipe, secondary case pipe and contact pin, described main sleeve pipe is positioned at the chi body side surface of main scale, described secondary case pipe is positioned at the hypotenuse side of secondary chi, and described main casing diameter is identical with secondary casing diameter, and contact pin is arranged through main sleeve pipe and secondary case pipe.

2. ruler according to claim 1, is characterized in that: the chi body of described secondary chi is provided with semicircle, and its home position is provided with center of circle retainer plate.

3. ruler according to claim 1, is characterized in that: described contact pin is supporting is provided with spacing intubate, and spacing intubate is sheathed is connected to contact pin end, and described spacing cannula diameter is less than main casing diameter.

4. ruler according to claim 1, is characterized in that: described main sleeve pipe place axis and right-angle side are 45 degree.

5. ruler according to claim 4, is characterized in that: the right-angle side of described main scale and secondary chi overlaps.

6. ruler according to claim 4, is characterized in that: the right-angle side of described main scale and secondary chi is parallel to each other.