CN201376426Y

CN201376426Y - Single-arm compass

Info

Publication number: CN201376426Y
Application number: CN200920021284U
Authority: CN
Inventors: 聂建秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-21
Filing date: 2009-04-21
Publication date: 2010-01-06
Anticipated expiration: 2019-04-21

Abstract

The utility model provides a single-arm compass, which belongs to the field of educational affiliation or study appliances. The single-arm compass comprises a graduated arm, a slide pen clip, a writing pen and a fix component; the slide pen clip is sleeved on the graduated arm; the writing pen adopting a chalk or a pencil is arranged on the slide pen clip; one end of the graduated arm is movably arranged on the fix component; the fixed end of the fix component adopts a needle type structure or a sucker type structure, and a handle fixed bracket is arranged at the other end of the graduated arm; and a control handle is arranged on the handle fixed bracket. When in use, a user move the slide pen clip along the graduated arm to determine the radius of a circle or a circular arc, and then confirms the fixation point of the fix component with one end and holds the control handle with the other hand, so as to take the fixation point of the fix component as a center to draw the circle or the circular arc. Compared with the prior art, the single-arm compass has the advantages of reasonable design, simple structure, convenient use, and the like, and as graduation is formed on the graduated arm, the radius of the circle or the circular arc can be easily confirmed without the help of a ruler.

Description

The single armed compasses

(1) technical field

The utility model relates to a kind of teaching aid or schooling apparatus, specifically a kind of single armed compasses for teaching or study use.

(2) background technology

The compasses of prior art are the both arms compasses, as a kind of specific purpose tool of drawing circle or circular arc, a wherein arm of both arms compasses is a stiff end, the central point of just drawn circle or circular arc, another arm is provided with writing implement, is used for the track of circle or circular arc, and the distance between two arms is the radius of circle or circular arc, this size need be measured by ruler, and is very inconvenient when reality is used.

(3) summary of the invention

Technical assignment of the present utility model is at the deficiencies in the prior art, and a kind of single armed compasses that need not just can determine drawn circle or arc size by ruler voluntarily are provided.

The technical scheme that its technical problem that solves the utility model adopts is:

The single armed compasses comprise scale arm, slip pen clip, lettering pen and fixation kit, are equipped with the slip pen clip on the scale arm, and the slip pen clip is provided with lettering pen, and a wherein end of scale arm is movably arranged on the fixation kit.

Above-mentioned single armed compasses are provided with the handle fixed mount at the other end of scale arm, and the handle fixed mount is provided with control handle.

Above-mentioned single armed compasses, its lettering pen are chalk or pencil.

Above-mentioned single armed compasses, the stiff end of its fixation kit are stylus structure or sucked type structure.

During use, the first position of mobile slip pen clip on the scale arm, thus determine the radius of drawn circle or circular arc, with the fixing point of determining fixation kit on the other hand, another holds control handle then, is that circle or circular arc are drawn in the center with the fixing point of fixation kit.

Single armed compasses of the present utility model compared with prior art, the beneficial effect that is produced is: reasonable in design, simple in structure, easy to use because the scale arm is provided with scale, so can just can be easy to determine to justify or the radius size of circular arc by ruler.

(4) description of drawings

Accompanying drawing 1 is the structural representation of first embodiment of the present utility model;

Accompanying drawing 2 is the structural representation of second embodiment of the present utility model.

Among the figure, 1, the scale arm, 2, the slip pen clip, 3, lettering pen, 4, fixation kit, 5, the handle fixed mount, 6, control handle.

(5) specific embodiment

Below in conjunction with explaining below 1,2 pairs of single armed compasses works of the present utility model of accompanying drawing.

Embodiment 1:

As shown in Figure 1, single armed compasses of the present utility model, its structure comprises scale arm 1, slip pen clip 2, lettering pen 3 and fixation kit 4, be equipped with slip pen clip 2 on the scale arm 1, slip pen clip 2 is provided with lettering pen 3, lettering pen 3 is a pencil, a wherein end of scale arm 1 is movably arranged on the fixation kit 4, the stiff end of fixation kit 4 is a stylus structure, the other end at scale arm 1 is provided with handle fixed mount 5, handle fixed mount 5 is provided with control handle 6, and this structure is applicable to that the student uses on textbook.

Embodiment 2:

As shown in Figure 2, single armed compasses of the present utility model, its structure comprises scale arm 1, slip pen clip 2, lettering pen 3 and fixation kit 4, be equipped with slip pen clip 2 on the scale arm 1, slip pen clip 2 is provided with lettering pen 3, and lettering pen 3 is a chalk, a wherein end of scale arm 1 is movably arranged on the fixation kit 4, the stiff end of fixation kit 4 is the sucked type structure, is provided with handle fixed mount 5 at the other end of scale arm 1, and handle fixed mount 5 is provided with control handle 6.This structure is applicable to that the teacher uses on blackboard.

Its processing and fabricating of single armed compasses of the present utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.

Except that the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims

1, single armed compasses, comprise scale arm (1), slip pen clip (2), lettering pen (3) and fixation kit (4), it is characterized in that: be equipped with slip pen clip (2) on the scale arm (1), slip pen clip (2) is provided with lettering pen (3), and a wherein end of scale arm (1) is movably arranged on the fixation kit (4).

2, single armed compasses according to claim 1 is characterized in that: the other end at scale arm (1) is provided with handle fixed mount (5), and handle fixed mount (5) is provided with control handle (6).

3, single armed compasses according to claim 1 and 2 is characterized in that: lettering pen (3) is chalk or pencil.

4, single armed compasses according to claim 1 and 2 is characterized in that: the stiff end of fixation kit (4) is stylus structure or sucked type structure.