CN201432517Y

CN201432517Y - Compass

Info

Publication number: CN201432517Y
Application number: CN200920042775XU
Authority: CN
Inventors: 许钧崴
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-25
Filing date: 2009-06-25
Publication date: 2010-03-31
Anticipated expiration: 2019-06-25

Abstract

The utility model provides a compass, which comprises a drawing supporting foot (1) and a positioning supporting foot (2), and is characterized in that a sucking disc (3) is arranged at the tail end of the positioning supporting foot (2). The utility model uses the sucking disc to replace the prior needlepoint so as to solve the problem that paper and blackboards are scratched by the compass, andthe use is convenient.

Description

Compasses

Technical field

The utility model relates to a kind of compasses.

Background technology

At present, the compasses that use in students in middle and primary schools and the teaching process are mainly the bipod compasses, and the end of wherein locating leg is a needle point, is used for locating the center of circle; The end of drawing leg is a nib, is used for drawing.

There is such weak point in these type of compasses: when the first, the pupil uses compasses, can not rationally grasp dynamics, with needle point paper be scratched easily, be difficult to accurately mark the center of circle; When the second, teacher used compasses to draw on blackboard, needle point scratched blackboard easily; Three, compasses are overall structure, carry inconvenience.

The utility model content

The purpose of this utility model is to provide the compasses of a kind of suitable teaching and study use.

The purpose of this utility model is achieved in that a kind of compasses, comprises drawing leg and location leg, and the end of described location leg is provided with sucker.

Convenient for compasses are rotated, described sucker links to each other with described location leg by multi-directional ball.

Dismounting for convenience, described drawing leg links to each other by a crossfoot with described location leg.

The connected mode of crossfoot and two legs can design like this, and an end of described crossfoot is nested on the shaft of described location leg; Described drawing leg is nested on the described crossfoot, certainly, also can adopt other feasible connected modes.

In order to reduce the quantity of the stationery that carries, be convenient for carrying, described crossfoot is the chi that has scale; The pen of described drawing leg for writing.Be provided with like this, can save a ruler and a writing pen.

The beneficial effects of the utility model are:

1, the utility model uses sucker to substitute existing needle point, has solved the problem that compasses scratch paper and blackboard, and is easy to use;

2, the utility model is a demountable structure, is assembled into by conventional ruler that uses of student and pen, and is easy to carry, economical and practical.

Description of drawings

Fig. 1 is the utility model product structure schematic diagram.

The specific embodiment

Below in conjunction with accompanying drawing, technical solutions of the utility model are elaborated, but protection domain of the present utility model is not limited to described embodiment.

Embodiment 1

As shown in Figure 1, a kind of compasses comprise drawing leg 1 and location leg 2, and the end of described location leg 2 is provided with sucker 3; Described sucker 3 links to each other with described location leg 2 by multi-directional ball 4; Described drawing leg 1 links to each other by a crossfoot 5 with described location leg 2; One end of described crossfoot 5 is nested on the shaft of described location leg 2; Described drawing leg 1 is nested on the described crossfoot 5; Described crossfoot 5 is for having the chi of scale; The pen of described drawing leg 1 for writing.

Claims

1, a kind of compasses comprise drawing leg (1) and location leg (2), and it is characterized in that: the end of described location leg (2) is provided with sucker (3).

2, compasses according to claim 1 is characterized in that: described sucker (3) links to each other with described location leg (2) by multi-directional ball (4).

3, compasses according to claim 1 and 2 is characterized in that: described drawing leg (1) links to each other by a crossfoot (5) with described location leg (2).

4, compasses according to claim 3 is characterized in that: an end of described crossfoot (5) is nested on the shaft of described location leg (2); Described drawing leg (1) is nested on the described crossfoot (5).

5, compasses according to claim 4 is characterized in that: described crossfoot (5) is for having the chi of scale; The pen of described drawing leg (1) for writing.