CN204870227U

CN204870227U - Compasses that can remain stable and use

Info

Publication number: CN204870227U
Application number: CN201520466231.1U
Authority: CN
Inventors: 邹明菁
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-02
Filing date: 2015-07-02
Publication date: 2015-12-16
Anticipated expiration: 2025-07-02

Abstract

The utility model belongs to the technical field of stationery, concretely relates to compasses that can remain stable and use, the lower part is provided with the pivot in metal support, be connected with the scale in the pivot of well lower part, the cover has the fixation clamp that can fasten on the scale, and can follow the scale and remove, the fixation clamp is connected with propelling pencil, the fixation clamp cup joints with propelling pencil is mobile, the utility model has the advantages of being simple in structure and convenient in operation, it is more stable during the mapping, the support contained angle can not take place to be changed, can directly measure the radius during mapping, it is more accurate to map, and can make great circle.

Description

A kind of compasses that can keep stable use

Technical field

The utility model belongs to technical field of stationery, is specifically related to a kind of compasses that can keep stable use.

Background technology

Known; existing compasses in use; be difficult to size and the stability of fixing drawn circle; during use, the crotch of compasses and tiptoe usually can loosen; thus the radius originally set is changed; cause drawn circle inaccurate, also needed to measure radius of circle with rule simultaneously before drawing circle, lack the degree of accuracy.

Utility model content

For overcoming the defect existing for prior art, the utility model provides a kind of can keep the stable compasses used, and can solve the problem.

The utility model will solve the technical scheme that its technical problem adopts: can keep the stable compasses used, comprise handle, metallic support, rotating shaft, propelling pencil, it is characterized in that: also comprise rule, geometrical clamp, described metallic support front end is provided with spur, end is described handle, and middle and lower part is provided with rotating shaft, is connected with rule by described rotating shaft, on described rule, cover has the geometrical clamp of band trip bolt, and the penholder of described geometrical clamp and propelling pencil can be fastenedly connected.

Preferably, described geometrical clamp is provided with and makes the described propelling pencil fixed cover that be inserted in vertical with described rule.

The beneficial effect that the utility model has is: the utility model structure is simple, easy to operate, more stable during mapping, support variable angle can not be there is, directly radius can be measured during mapping, map more accurate, and the comparatively great circle that original compasses can not do can be made, eliminate the process measuring radius with compasses on the scale.

Accompanying drawing explanation

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

Fig. 2 is the schematic diagram of the utility model collecting state;

Reference numeral: 1-metallic support, 2-rotating shaft, 3-rule, 5-geometrical clamp, 4-propelling pencil

Detailed description of the invention

A kind of compasses that can keep stable use described as shown in Figure 1, Figure 2, comprise metallic support 1, rotating shaft 2, rule 3, geometrical clamp 5, propelling pencil 4, the top of described metallic support 1 is provided with handle, lower end is provided with leg, middle and lower part is provided with rotating shaft 2, the rotating shaft of described middle and lower part is connected with rule 3, on described rule 3, cover has geometrical clamp 5 that can be fastening, can move along rule 3, described geometrical clamp 5 and propelling pencil 4 can fasteningly be socketed, and described geometrical clamp 5 makes that propelling pencil 4 and rule are vertical to be connected.

During use, propelling pencil is fixed on geometrical clamp, and make rule parallel with drawing paper, by known radius of a circle, sliding fixation clamp measures the radius of a circle that will draw on the scale, is fastened and fixed folder, then map, after finishing, propelling pencil is taken off, then rule is gone back to initial position along rotating shaft, place and compare save space.More stable during the utility model compasses construction, support variable angle can not occur, directly can measure radius during mapping, mapping is more accurate, and can make the comparatively great circle that original compasses can not do, and eliminates the process measuring radius with compasses on the scale.

It should be noted last that: above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although be described in detail the utility model with reference to above-described embodiment, will be understood by those skilled in the art that: still can modify to the utility model or equivalent replacement, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.

Claims

1. one kind can keep the stable compasses used, comprise handle, metallic support (1), rotating shaft (2), propelling pencil (4), it is characterized in that: also comprise rule (3), geometrical clamp (5), described metallic support (1) front end is provided with spur, end is described handle, middle and lower part is provided with rotating shaft (2), rule (3) is connected with by described rotating shaft (2), the upper cover of described rule (3) has the geometrical clamp (5) of band trip bolt, described geometrical clamp (5) can be fastenedly connected with the penholder of propelling pencil (4).

2. a kind of compasses that can keep stable use according to claim 1, is characterized in that: described geometrical clamp (5) is provided with and makes the described propelling pencil fixed cover that be inserted in vertical with described rule (3).